bring back the change from PR #24.

Author: chfw

.moban.d/README.rst

@@ -27,9 +27,10 @@ Here are some example codes:
 .. code-block:: python
 
     from flask import Flask, request, jsonify
-    from flask.ext import excel
+    import flask_excel
 
     app=Flask(__name__)
+	flask_excel.init_excel(app)
 
     @app.route("/upload", methods=['GET', 'POST'])
     def upload_file():

README.rst

@@ -202,9 +202,10 @@ Here are some example codes:
 .. code-block:: python
 
     from flask import Flask, request, jsonify
-    from flask.ext import excel
+    import flask_excel
 
     app=Flask(__name__)
+	flask_excel.init_excel(app)
 
     @app.route("/upload", methods=['GET', 'POST'])
     def upload_file():